The top of the square portion of the pin is approximately 1/8 or 4 mm. The item "500 Tuning Pins for Dulcimer Zither Harpsichord or Harp" is in sale since Friday, June 27, 2014. This item is in the category "Musical Instruments & Gear\String\Folk & World\Harps & Dulcimers".
The seller is "howardpianoind" and is located in Hortonville, Wisconsin. This item can be shipped worldwide.